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| author | Chris Lattner <sabre@nondot.org> | 2010-08-28 17:59:08 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-08-28 17:59:08 +0000 |
| commit | 24faf611a33900b225c636f908eb30234215af21 (patch) | |
| tree | fb412877725cb1019812ce5b68beab763bc9347b /utils/vim/llvm.vim | |
| parent | 3ddcc430401f0d16bee17b2afb52dcaa2f480f8b (diff) | |
| download | llvm-24faf611a33900b225c636f908eb30234215af21.tar.gz llvm-24faf611a33900b225c636f908eb30234215af21.tar.bz2 llvm-24faf611a33900b225c636f908eb30234215af21.tar.xz | |
fix the buildvector->insertp[sd] logic to not always create a redundant
insertp[sd] $0, which is a noop. Before:
_f32: ## @f32
pshufd $1, %xmm1, %xmm2
pshufd $1, %xmm0, %xmm3
addss %xmm2, %xmm3
addss %xmm1, %xmm0
## kill: XMM0<def> XMM0<kill> XMM0<def>
insertps $0, %xmm0, %xmm0
insertps $16, %xmm3, %xmm0
ret
after:
_f32: ## @f32
movdqa %xmm0, %xmm2
addss %xmm1, %xmm2
pshufd $1, %xmm1, %xmm1
pshufd $1, %xmm0, %xmm3
addss %xmm1, %xmm3
movdqa %xmm2, %xmm0
insertps $16, %xmm3, %xmm0
ret
The extra movs are due to a random (poor) scheduling decision.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112379 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/vim/llvm.vim')
0 files changed, 0 insertions, 0 deletions